33 lines
1.4 KiB
Ruby
33 lines
1.4 KiB
Ruby
class ChangeChangesetsRevisionToString < ActiveRecord::Migration
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def self.up
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# Some backends (eg. SQLServer 2012) do not support changing the type
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# of an indexed column so the index needs to be dropped first
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# BUT this index is renamed with some backends (at least SQLite3) for
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# some (unknown) reasons, thus we check for the other name as well
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# so we don't end up with 2 identical indexes
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if index_exists? :changesets, [:repository_id, :revision], :name => :changesets_repos_rev
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remove_index :changesets, :name => :changesets_repos_rev
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end
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if index_exists? :changesets, [:repository_id, :revision], :name => :altered_changesets_repos_rev
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remove_index :changesets, :name => :altered_changesets_repos_rev
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end
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change_column :changesets, :revision, :string, :null => false
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add_index :changesets, [:repository_id, :revision], :unique => true, :name => :changesets_repos_rev
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end
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def self.down
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if index_exists? :changesets, :changesets_repos_rev
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remove_index :changesets, :name => :changesets_repos_rev
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end
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if index_exists? :changesets, [:repository_id, :revision], :name => :altered_changesets_repos_rev
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remove_index :changesets, :name => :altered_changesets_repos_rev
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end
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change_column :changesets, :revision, :integer, :null => false
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add_index :changesets, [:repository_id, :revision], :unique => true, :name => :changesets_repos_rev
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end
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end
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